Implement ES2015 class feature (part II.) (#2439)

This patch is the second milestone of the implementation of this new language element.

Supported:
 - Single class inheritance
 - Functionality of 'super' keyword
 - Implicit constructor in class heritage
 - Specific behaviour while extending with the built-in 'Array' or '%TypedArray%' object
 - Abstract subclasses (Mix-ins)

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu

jerry-core/ecma/operations/ecma-eval.c

@@ -22,10 +22,7 @@
 #include "ecma-lex-env.h"
 #include "js-parser.h"
 #include "vm.h"
-
-#ifdef JERRY_ENABLE_LINE_INFO
 #include "jcontext.h"
-#endif /* JERRY_ENABLE_LINE_INFO */
 
 /** \addtogroup ecma ECMA
  * @{
@@ -98,6 +95,12 @@ ecma_op_eval_chars_buffer (const lit_utf8_byte_t *code_p, /**< code characters b
   JERRY_CONTEXT (resource_name) = ecma_make_magic_string_value (LIT_MAGIC_STRING__EMPTY);
 #endif /* JERRY_ENABLE_LINE_INFO */
 
+#ifndef CONFIG_DISABLE_ES2015_CLASS
+  parse_opts |= ECMA_GET_SUPER_EVAL_PARSER_OPTS ();
+
+  ECMA_CLEAR_SUPER_EVAL_PARSER_OPTS ();
+#endif /* !CONFIG_DISABLE_ES2015_CLASS */
+
   ecma_value_t parse_status = parser_parse_script (NULL,
                                                    0,
                                                    code_p,